Rhynchonellata - Atrypida - Anazygidae
Alternative combination: Atrypa modesta
Full reference: J. Hall. 1847. Containing descriptions of the organic remains of the lower division of the New York system (equivalent of the Lower Silurian rocks of Europe). Paleontology of New York 1:1-338
Belongs to Zygospira according to H. J. Howe 1965
See also Foerste 1924 and Hall 1862
Sister taxa: Zygospira deflecta, Zygospira fallax, Zygospira gutta, Zygospira kentuckiensis, Zygospira lebanonensis, Zygospira matutina, Zygospira meafordensis, Zygospira resupinata, Zygospira sulcata
Ecology: stationary epifaunal suspension feeder
Distribution:
• Ordovician of Canada (6: Northwest Territories, Ontario, Quebec collections), United States (465: Colorado, Georgia, Illinois, Iowa, Indiana, Kentucky, Maryland, Michigan, Minnesota, New York, Ohio, Pennsylvania and Virginia, Tennessee, Virginia)
Total: 471 collections including 473 occurrences
Specimen images are retrieved through the ePANDDA API.
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